package com.atguigu.gulimall.cart.controller;

import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.gulimall.cart.interceptor.CartIntercepter;
import com.atguigu.gulimall.cart.service.CartService;
import com.atguigu.gulimall.cart.vo.Cart;
import com.atguigu.gulimall.cart.vo.CartItem;
import com.atguigu.gulimall.cart.vo.UserInfoTo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import java.util.List;
import java.util.concurrent.ExecutionException;

@Slf4j
@Controller
public class CartController {
    @Autowired
    CartService cartService;
    @GetMapping("/currentUserCartItems")
    @ResponseBody
    public List<CartItem> getCurrentUserCartItems(){
        return cartService.getUserCartItems();
    }
    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId")Long skuId){
        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";
    }
    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId")Long skuId,@RequestParam("num")Integer num){
        cartService.changeItemCount(skuId,num);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId,@RequestParam("check") Integer check){
        cartService.checkItem(skuId,check);
        return "redirect:http://cart.gulimall.com/cart.html";
    }
    /**
     * 浏览器有个user-key，一个月后过期。如果第一次使用购物车功能，都会给一个临时购物车身份
     * 以后保存，每次访问都会带上user-key
     *
     * 登录：session里有
     * 没登陆：按照cookie里面带来的user-key做。
     * 第一次：没有临时用户，帮忙创建一个临时用户。
     * @param
     * @return
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
        //1.快速得到用户信息。id，user=key
        Cart cart=cartService.getCart();
        model.addAttribute("cart",cart);
        return "cartList";
    }
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId, @RequestParam("num")Integer num, RedirectAttributes ra) throws ExecutionException, InterruptedException {
        cartService.addToCart(skuId,num);
        ra.addAttribute("skuId",skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,Model model){
        //重定向到成功页面。再次查询购物车数据即可

        CartItem item=cartService.getCartItem(skuId);
        model.addAttribute("item",item);
        return "success";
    }
}
